scholarly journals Histone acetyltransferase TaHAG1 acts as a crucial regulator to strengthen salt tolerance of hexaploid wheat

2021 ◽  
Author(s):  
Mei Zheng ◽  
Jingchen Lin ◽  
Xingbei Liu ◽  
Wei Chu ◽  
Jinpeng Li ◽  
...  
Keyword(s):  
Salt Tolerance ◽  
Bread Wheat ◽  
Hexaploid Wheat ◽  
Histone Acetyltransferase ◽  
Tetraploid Wheat ◽  
Triticum Aestivum L ◽  
Ros Production ◽  
Signal Specificity ◽  
H3 Acetylation

Abstract Polyploidy occurs prevalently and plays an important role during plant speciation and evolution. This phenomenon suggests polyploidy could develop novel features that enable them to adapt wider range of environmental conditions compared with diploid progenitors. Bread wheat (Triticum aestivum L., BBAADD) is a typical allohexaploid species and generally exhibits greater salt tolerance than its tetraploid wheat progenitor (BBAA). However, little is known about the underlying molecular basis and the regulatory pathway of this trait. Here, we show that the histone acetyltransferase TaHAG1 acts as a crucial regulator to strengthen salt tolerance of hexaploid wheat. Salinity-induced TaHAG1 expression was associated with tolerance variation in polyploidy wheat. Overexpression, silencing and CRISPR-mediated knockout of TaHAG1 validated the role of TaHAG1 in salinity tolerance of wheat. TaHAG1 contributed to salt tolerance by modulating ROS production and signal specificity. Moreover, TaHAG1 directly targeted a subset of genes that are responsible for hydrogen peroxide production, and enrichment of TaHAG1 triggered increased H3 acetylation and transcriptional upregulation of these loci under salt stress. In addition, we found the salinity-induced TaHAG1-mediated ROS production pathway is involved in salt tolerance difference of wheat accessions with varying ploidy. Our findings provide insight into the molecular mechanism of how an epigenetic regulatory factor facilitates adaptability of polyploidy wheat and highlights this epigenetic modulator as a strategy for salt tolerance breeding in bread wheat.

THE ROLE OF TRITICUM CARTHLICUM IN THE ORIGIN OF BREAD WHEAT BASED ON COMPARATIVE MILLING AND BAKING PROPERTIES

1977 ◽  
Vol 57 (2) ◽  
pp. 367-373 ◽  
Author(s):  
E. R. KERBER ◽  
V. M. BENDELOW
Keyword(s):  
Bread Wheat ◽  
Hexaploid Wheat ◽  
Tetraploid Wheat ◽  
Quality Characteristic ◽  
High Quality ◽  
Wheat Hybrid ◽  
Aegilops Squarrosa ◽  
Comparative Results ◽  
Synthetic Hexaploids

To determine whether Triticum carthlicum Nevski (2n = 28 = AABB) could have been the donor of the AABB tetraploid component to hexaploid wheat (2n = 42 = AABBDD), several milling and baking properties of this tetraploid were compared with those of Tetra Canthatch, the AABB tetraploid extracted from the high quality bread wheat cv. Canthatch. The same comparisons were also made between synthetic hexaploids produced from T. carthlicum and Aegilops squarrosa L. (2n = 14 = DD) and synthetics produced from Tetra Canthatch and the same strains of Ae. squarrosa. Overall, the milling and baking properties of T. carthlicum were similar to those of Tetra Canthatch. The range of variability of each quality characteristic among synthetic hexpaloids derived from T. carthlicum was similar to that among those produced from Tetra Canthatch. These comparative results indicate that T. carthlicum adequately substitutes for Tetra Canthatch with respect to the milling and baking properties evaluated in this study. Consequently, from this standpoint, T. carthlicum cannot be rejected as a possible source of the AABB component of common bread wheat, nor does the evidence exclude the hypothesis that this tetraploid is merely a segregate from a common hexaploid wheat — tetraploid wheat hybrid.

scholarly journals Characterizing the Role of TaWRKY13 in Salt Tolerance

2019 ◽  
Vol 20 (22) ◽  
pp. 5712 ◽  
Author(s):  
Shuo Zhou ◽  
Wei-Jun Zheng ◽  
Bao-Hua Liu ◽  
Jia-Cheng Zheng ◽  
Fu-Shuang Dong ◽  
...  
Keyword(s):  
Salt Tolerance ◽  
Oryza Sativa L ◽  
Triticum Aestivum L ◽  
Regulatory Elements ◽  
Root Surface ◽  
Root Surface Area ◽  
Functional Identification ◽  
Positive Role ◽  
Data Set

The WRKY transcription factor superfamily is known to participate in plant growth and stress response. However, the role of this family in wheat (Triticum aestivum L.) is largely unknown. Here, a salt-induced gene TaWRKY13 was identified in an RNA-Seq data set from salt-treated wheat. The results of RT-qPCR analysis showed that TaWRKY13 was significantly induced in NaCl-treated wheat and reached an expression level of about 22-fold of the untreated wheat. Then, a further functional identification was performed in both Arabidopsis thaliana and Oryza sativa L. Subcellular localization analysis indicated that TaWRKY13 is a nuclear-localized protein. Moreover, various stress-related regulatory elements were predicted in the promoter. Expression pattern analysis revealed that TaWRKY13 can also be induced by polyethylene glycol (PEG), exogenous abscisic acid (ABA), and cold stress. After NaCl treatment, overexpressed Arabidopsis lines of TaWRKY13 have a longer root and a larger root surface area than the control (Columbia-0). Furthermore, TaWRKY13 overexpression rice lines exhibited salt tolerance compared with the control, as evidenced by increased proline (Pro) and decreased malondialdehyde (MDA) contents under salt treatment. The roots of overexpression lines were also more developed. These results demonstrate that TaWRKY13 plays a positive role in salt stress.

Growth Properties and Ion Distribution in Different Tissues of Bread Wheat Genotypes (Triticum aestivum L.) Differing in Salt Tolerance

2011 ◽  
Vol 197 (1) ◽  
pp. 21-30 ◽  
Author(s):  
A. Rahnama ◽  
K. Poustini ◽  
R. Tavakkol-Afshari ◽  
A. Ahmadi ◽  
H. Alizadeh
Keyword(s):  
Triticum Aestivum ◽  
Salt Tolerance ◽  
Bread Wheat ◽  
Triticum Aestivum L ◽  
Ion Distribution ◽  
Wheat Genotypes ◽  
Growth Properties ◽  
Different Tissues

Molecular characterization revealed the role of catalases under abiotic and arsenic stress in bread wheat (Triticum aestivum L.)

2021 ◽  
Vol 403 ◽  
pp. 123585 ◽  
Author(s):  
Shivi Tyagi ◽  
Shumayla ◽  
Madhu ◽  
Kashmir Singh ◽  
Santosh Kumar Upadhyay
Keyword(s):  
Triticum Aestivum ◽  
Molecular Characterization ◽  
Bread Wheat ◽  
Triticum Aestivum L ◽  
Arsenic Stress

Multi-locus genome-wide association studies reveal novel genomic regions associated with vegetative stage salt tolerance in bread wheat (Triticum aestivum L.)

Genomics ◽  
2020 ◽  
Vol 112 (6) ◽  
pp. 4608-4621
Author(s):  
Shiksha Chaurasia ◽  
Amit Kumar Singh ◽  
L.S. Songachan ◽  
Axma Dutt Sharma ◽  
Rakesh Bhardwaj ◽  
...  
Keyword(s):  
Triticum Aestivum ◽  
Salt Tolerance ◽  
Bread Wheat ◽  
Association Studies ◽  
Triticum Aestivum L ◽  
Genome Wide Association ◽  
Vegetative Stage ◽  
Genome Wide Association Studies ◽  
Genome Wide ◽  
Genomic Regions

Molecular genetic maps of the group 6 chromosomes of hexaploid wheat (Triticum aestivum L. em. Thell.)

Genome ◽  
1996 ◽  
Vol 39 (2) ◽  
pp. 359-366 ◽  
Author(s):  
Celso L. Marino ◽  
Neal A. Tuleen ◽  
Gary E. Hart ◽  
James C. Nelson ◽  
Mark E. Sorrells ◽  
...  
Keyword(s):  
Triticum Aestivum ◽  
Hexaploid Wheat ◽  
Tetraploid Wheat ◽  
Triticum Aestivum L ◽  
Genetic Maps ◽  
Wheat Bread ◽  
Linkage Maps ◽  
Homoeologous Group ◽  
Group 6 ◽  
Orthologous Loci

Restriction fragment length polymorphism (RFLP) maps of chromosomes 6A, 6B, and 6D of hexaploid wheat (Triticum aestivum L. em. Thell.) have been produced. They were constructed using a population of F7–8 recombinant inbred lines derived from a synthetic wheat × bread wheat cross. The maps consist of 74 markers assigned to map positions at a LOD ≥ 3 (29 markers assigned to 6A, 24 to 6B, and 21 to 6D) and 2 markers assigned to 6D ordered at a LOD of 2.7. Another 78 markers were assigned to intervals on the maps. The maps of 6A, 6B, and 6D span 178, 132, and 206 cM, respectively. Twenty-one clones detected orthologous loci in two homoeologues and 3 detected an orthologous locus in each chromosome. Orthologous loci are located at intervals of from 1.5 to 26 cM throughout 70% of the length of the linkage maps. Within this portion of the maps, colinearity (homosequentiality) among the three homoeologues is strongly indicated. The remainder of the linkage maps consists of three segments ranging in length from 47 to 60 cM. Colinearity among these chromosomes and other Triticeae homoeologous group 6 chromosomes is indicated and a consensus RFLP map derived from maps of the homoeologous group 6 chromosomes of hexaploid wheat, tetraploid wheat, Triticum tauschii, and barley is presented. Key words : RFLP, wheat, linkage maps, molecular markers.

scholarly journals A locus for sodium exclusion (Nax1), a trait for salt tolerance, mapped in durum wheat

2004 ◽  
Vol 31 (11) ◽  
pp. 1105 ◽  
Author(s):  
Megan P. Lindsay ◽  
Evans S. Lagudah ◽  
Ray A. Hare ◽  
Rana Munns
Keyword(s):  
Salt Tolerance ◽  
Durum Wheat ◽  
Triticum Turgidum ◽  
Tetraploid Wheat ◽  
Triticum Aestivum L ◽  
Wheat Breeding ◽  
Lower Yield ◽  
Diverse Backgrounds ◽  
Salt Affected Soils ◽  
Sodium Exclusion

Salinity affects durum wheat [Triticum turgidum L. ssp. durum (Desf.)] more than it affects bread wheat (Triticum aestivum L.), and results in lower yield for durum wheat cultivars grown on salt-affected soils. A novel source of salt tolerance in the form of a sodium exclusion trait, identified previously in a screen of tetraploid wheat germplasm, was mapped using a QTL approach. The trait, measured as low Na+ concentration in the leaf blade, was mapped on a population derived from a cross between the low Na+ landrace and the cultivar Tamaroi. The use of AFLP, RFLP and microsatellite markers identified a locus, named Nax1 (Na exclusion), on chromosome 2AL, which accounted for approximately 38% of the phenotypic variation in the mapping population. Markers linked to the Nax1 locus also associated closely with low Na+ progeny in a genetically unrelated population. A microsatellite marker closely linked to the Nax1 locus was validated in genetically diverse backgrounds, and proven to be useful for marker-assisted selection in a durum wheat breeding program.

scholarly journals Activated Histone Acetyltransferase p300/CBP-Related Signalling Pathways Mediate Up-Regulation of NADPH Oxidase, Inflammation, and Fibrosis in Diabetic Kidney

Antioxidants ◽  
2021 ◽  
Vol 10 (9) ◽  
pp. 1356
Author(s):  
Alexandra-Gela Lazar ◽  
Mihaela-Loredana Vlad ◽  
Adrian Manea ◽  
Maya Simionescu ◽  
Simona-Adriana Manea
Keyword(s):  
Nadph Oxidase ◽  
Histone Acetyltransferase ◽  
Epigenetic Mark ◽  
Ros Production ◽  
Diabetic Mice ◽  
Diabetic Kidney ◽  
Enhanced Expression ◽  
To Receive ◽  
Acetyltransferase P300

Accumulating evidence implicates the histone acetylation-based epigenetic mechanisms in the pathoetiology of diabetes-associated micro-/macrovascular complications. Diabetic kidney disease (DKD) is a progressive chronic inflammatory microvascular disorder ultimately leading to glomerulosclerosis and kidney failure. We hypothesized that histone acetyltransferase p300/CBP may be involved in mediating diabetes-accelerated renal damage. In this study, we aimed at investigating the potential role of p300/CBP in the up-regulation of renal NADPH oxidase (Nox), reactive oxygen species (ROS) production, inflammation, and fibrosis in diabetic mice. Diabetic C57BL/6J mice were randomized to receive 10 mg/kg C646, a selective p300/CBP inhibitor, or its vehicle for 4 weeks. We found that in the kidney of C646-treated diabetic mice, the level of H3K27ac, an epigenetic mark of active gene expression, was significantly reduced. Pharmacological inhibition of p300/CBP significantly down-regulated the diabetes-induced enhanced expression of Nox subtypes, pro-inflammatory, and pro-fibrotic molecules in the kidney of mice, and the glomerular ROS overproduction. Our study provides evidence that the activation of p300/CBP enhances ROS production, potentially generated by up-regulated Nox, inflammation, and the production of extracellular matrix proteins in the diabetic kidney. The data suggest that p300/CBP-pharmacological inhibitors may be attractive tools to modulate diabetes-associated pathological processes to efficiently reduce the burden of DKD.

Role of silicon in salt tolerance of wheat (Triticum aestivum L.)

Plant Science ◽  
1992 ◽  
Vol 85 (1) ◽  
pp. 43-50 ◽  
Author(s):  
Rafiq Ahmad ◽  
Syed Hasan Zaheer ◽  
Shoaib Ismail
Keyword(s):  
Triticum Aestivum ◽  
Salt Tolerance ◽  
Triticum Aestivum L
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